Safety razor



9 Q O. GREEF SAFETY RAZOR Original Filed March 20. 1922 Patented Aug. 31, 1926.

UNITED STATES OTTO GREEF, OF PITTSBURG, KANSAS.-

SAFETY RAZOR.

Application filed March 20, 1922, Serial No. 545,206. Renewed January 25, 1926.

This invention relates to safety razors of the class in which a rocking blade holder is maintained in relation to a guard; the principal object of the invention is to provide means for allowing the blade to be diagonally stroked upon the leather strop thereby approaching the heel and toe movement which is the method of stropping universally used by all professional barbers.

Another object of the invention is to improve safety razor handles so that the operator will have better control of the safety razor when in the act of reciprocating the razor frame on the leather strip in the process of stropping the blade with the heel and toe movement.

Another object of the invention is to provide a novel safety razor blade, and novel guard to enable the diagonal stropping, or heel and toe movement during the stropping process to be readily attained.

The accompanying drawings illustrate one practical embodiment of the invention, and I will describe the same with. reference thereto, and in the claims summarize the essentials of the invention and novel features of construction and novel combination of parts for which protection is desired.

In said drawings Fig. 1 is a plan view of a safety razor embodying my invention.

Fig. 2 is an end elevation of Fig. 1 showing the blade in locked position, and also showing in dotted lines the leather strop with the blades in the stropping position.

Fi 3 is a detail view of the novel blade guard.

Fig- 4 is a detail view of the novel razor blade.

Fig. 5 is a detail view of the razor handle.

Fig. 6 is a section on the line 6--6 of Fig- 5.

Fig. 7 is a View of anothermodification of the handle.

Fig. 8 is a section on the line 88 Fig. 7.

Fig. 9 is a view showing position of the razor in diagonally stropping operation. A

I have illustrated my invention as embodied in a safety razor of the so-called Auto strop razor type, the razor comprlsing a frame having a base 1 with end pieces 1*, and at the outer edges thereof and between these end pieces extend two parallel rods 2 and 3; and two parallel shafts 4 and 5. On rods 2, 3 are the rollers, 2, 3 for engagement with a leather strop S as indicated in Figs. 2 and 9.

As shown in Fig. 2, shaft 4 is disposed intermediate and slightly above rods 2 and 3, and the strop S is inserted so as to pass over rollers 2 and 3 and under shaft 4, thereby causing the strop when drawn taut to bind against the shaft and impart rotation thereto when the frame is reciprocated on the strop.

The upper shaft 5 carries the usual blad holder 6 to which may be detachably fastened the blade 7 in the usual manner. The shaft 5 and shaft 4 are provided exterior to the upright l with intermediate cogs 4 and 5 for the purpose of revolving the blade holder during the stropping process as the frame is reoiprocated upon the strop S. I

In my invention instead of the usual rectangular blade which is slightly shorter than the length of the frame 1 between the uprights 1, 1", I make the blade slightly longer than the frame, considering the extreme length of the blade, but bevel each end of the blade as indicated at 7 and 7 so that both ends incline diagonally say to the right, viewed from the left hand side of Fig. 1, and consequently the edge of the blade at the end of the angle 7 projects a little to the inside of the standard 1 while the edge of the blade at the end of the angle 7 would project a little to the outside of the upright 1". The rear edge of the blade is provided with the usual notches 7 for engagement with the usual retaining devices 6 on the holder 6, the ends of the blade are thus made diagonal to facilitate the diagonal or draw stropping of the entire edge of the blade as indicated in Fig. 9, where it will be seen that although the frame is turned at an angle to the strop S the whole cutting edge of the blade is in contact with the strop.

As shown in Figs. 1 and 2 slidably mounted on the under side of the frame base 1 is the blade guard 10 provided, as shown in Fig. 3 with teeth 10 of any desired form at its front edge, and at each front corner thereof is a retainer 10 which engages the corner of the blade 7 and holds it on the guard 10. Guard 10 has its ends 10 formed on an angle diagonal to the axis of the guard, and conforming to the angle of the ends 7*, 7 of blade 7, to properly position the blade 7 on the strop S when the frame is turned at an angle to the strop and reciprocated diagonally of the strop S as illustrated in F ig. 9.

The guard 10 is provided with an extension 10 opposite the teeth 10 which exten- 1 portions 1 in which the shafts 4: and 5 are I journaled are perpendicular to the lower portions in which the rods 2 and 3 are mounted. The narrow parts 1 enable the frame to beturned diagonally in relation to the strop, as indicated in Fig. 9, and en- 1 ables-a wider strop S to be employed than would be possible if the parts 1 were broader at the junction with the part 1, 1 or the end pieces made as in the usual safety razors.

To permit ready turning of the razor frame, to produce the desired diagonal stropping of the blade, the handle 11 is provided with a thumb piece of any desired ,1 form near its upperend. This thumb piece may be a loop 11 as shown in Figs. 5, and 6 or a flattened bar 11 as shown in Figs. 7 and 8.. This thumb piece gives the. operator complete control of the razor frame in the stropping operation, using the diagonal stroke. A square ended blade can not be diagonally stropped across the full length of its cutting edge, but my novel blade with diagonal ends insures the entire cutting edge.

The novel guard with the diagonal ends corresponding to the diagonal shape of the blade enables the blade to be properly positioned on the strop for stropping at the proper stropping of same time insuring proper guarding of the edge of the blade during the shaving operation.

The thumb piece on the razor handle insures proper-control of the razor frame in diagonally reciprocating the frameto strop the blade.

What I claim is 1. A safety razor comprising a frame; a blade. holder swingably mounted in said frame; a 'roller mounted in said frame to engage a razor strop; means whereby when the roller is actuated by the strop the blade holder is rocked; a b adeard mounted on said frame having teeth a jacent the cutaxis of rotation 0 clined at angles to the cutting edge of the blade, substantially as described.

3. A safety razor comprising a frame; a blade holder swingably mounted in said frame; a roller mounted in said frame to engage a razor strop, means whereby when the roller is actuated by the strop the blade holder is rocked; a blade having parallel sides and parallel ends inclined at angles to the cutting edge of the blade; a blade guard mounted on said frame having teeth adjacent the cutting edge of said blade and having its ends parallel but inclined diagonally to the axis of the guard, for the purpose specified.

4. In a safety razor a frame comprisinga base and end pieces approximately T- shaped, rollers journaled in said end pieces; a blade holder rotatably mounted in said frame; a blade mounted in said holder and having its ends diagonal to its sides; and a guard for the blade having diagonal ends conforming to the shape of the ends of the blade, substantially as described.

5. A safety razor comprising a frame; a blade holder swingably mounted in said frame, a roller mounted in said frame to engage a razor strop, means whereby-when the rollers are actuated by the strop the blade holder is rocked, a blade having parallel sides, and parallel ends inclined at angles to the cutting edge; a blade guard mounted on said. frame havin teeth adjacent the cutting edge of said b ade and blade engaging hooks on said guard to retain the blade in shaving relation to the guard, said guard having its ends parallel but inclined diagonally to the axis of the guard, for the purpose specified.

6. A safety razor comprising a frame, a blade holder rotatably mounted on said frame and a blade guard adjustably mounted on said frame and having its ends dia onal to the axis of rotation of the bla e holder, substantially as described.

7. In a safety razor comprising a frame,

a blade holder rotatably mounted on said frame; a blade detachably attached to said holder, and havin its ends diagonal to the axis of rotation 0% the blade holder, ad ustably mounted on said frame, and cooperating means ofi the blade and guard for holding same in shaving relation, substantially as described.

8. A safety razor comprising a frame, a blade holder rotatably mounted on said frame; a blade detachably mounted on said holder, and-having its ends dia onal to the the blade hofiier, a blade a guard.

guard adjustably mounted on said frame and having its ends diagonal to the axis of rotation of the blade holder and conforming to the shape of the blade, and cooperating 5 means on said guard and blade for holding same in shaving relation, substantially as described.

9. A safety razor blade having parallel sides, and parallel ends extending diagonally to the sides, said ends being provided 10 with substantially semi-circular notches therein for the purpose pecified.

In testimony that I claim the foregoing as my own, I aifix my signature.

OTTO GREEF. 

